BNSF railroad wants a federal judge to prevent two of its unions from going on strike next month over a new attendance policy that would penalize employees for missing work.

The Fort Worth, Texas-based railroad went to court after the Brotherhood of Locomotive Engineers and Trainmen, and the Transportation Division of the International Association of Sheet Metal, Air, Rail, and Transportation union both threatened to strike over the new policy that is set to go into effect on Feb. 1.

The unions said they are surveying their 17,000 members who work for BNSF to see if workers will support a strike.

The heads of the two unions, BLET National President Dennis Pierce and SMART-TD President Jeremy Ferguson, said in a joint statement that the new policy would violate their contracts with BNSF and could provide an incentive for workers to show up when they are sick in the middle of the coronavirus pandemic.

“This unprecedented BNSF policy repudiates direct and clear contract language, and in application, will attempt to force our members to report for duty without regard for their medical condition as we struggle to come out of a pandemic,” Pierce and Ferguson said.